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ISEM 3015 Telecommunications and networking in business

ISEM 3015 Telecommunications and networking in business. Traditional TV?  Not portable Inconvenience Too big ……. Introduction to our topic: Mobile TV. Why we are interested on doing this topic?. Background Information on Mobile TV.

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ISEM 3015 Telecommunications and networking in business

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  1. ISEM 3015Telecommunications and networking in business

  2. Traditional TV? •  Not portable • Inconvenience • Too big • ……

  3. Introduction to our topic: Mobile TV • Why we are interested on doing this topic?

  4. Background Information on Mobile TV • There are 4 possible techniques that operate the Mobile TV • They are: • OTT • CMMD • DTMB • DVB

  5. I) Over the top

  6. Content of OTT A) What is OTT • By Definition • By Comparison B) Trend of Telecommunication – using OTT C) Element of OTT D) Application E) Strength and Weakness

  7. A) Definition • Over-the-top content • Deliver multimedia content over the Internet • Using HTTP protocol • No multiple system operator being involved in the control or distribution of the content • Transmission speed and quality depend on internet connection • Generally, lower in cost than the traditional method of delivery

  8. Illustration cable/satellite Internet

  9. Comparison

  10. B) Major trend of telecommunication • The world is rapidly going mobile and broadband • The huge growth in video traffic, which is now five times larger than it was five years ago • More than 50 billion connected devices by 2020

  11. C) Elements of OTT

  12. Elements of OTT • Personal Device • Internet • Third Party • Platform for video delivery

  13. a) Personal Device • Personal device such as cell phone, iPad or computer • Enable us to watch the video by using such devices

  14. b) Internet • Internet : fundamental part of OTT • Without Internet : OTT can not be used • Example of Internet : Wifi, 4G,3G ,Home gateway

  15. c) Third Party • Provide the video through Internet • Example such as Now TV, TVB (MyTV)

  16. d) Platform of third party to provide TV program • Video on Demand • Video assets are stored in video servers • severed when a user make the request in the from of IP unicast stream

  17. Video Server • Centralized IP Edge • Distributed IP Edge

  18. D) Over-the-top(OTT) Application

  19. Over-the-top Application An over-the-top (OTT) application is any app or service that provides a product over the Internet and bypasses traditional distribution Services that come over the top are most typically related to media &communication and are generally

  20. Traditional distribution • Without a multiple system operator being involved in the control or distribution of the content • A multiple-system operator or multi-system operator (MSO) is an operator of multiple cable or direct-broadcast satellite television systems

  21. Media & communication Using OTT • An online video distributor (OVD) • OTT content through internet-connected devices such as desktop and laptop computers, tablets, smartphones including iPhones and Android phones • set-top boxes such as Google TV smart TVs and gaming consoles such as the Wii, PlayStation 3 and Xbox 360.

  22. E) Strength & Weakness

  23. II) CMMB

  24. Definition • China Mobile Multimedia Broadcasting (CMMB) • Mobile television and multimedia standard released in 2006 • Developed by State Administration of Radio, Film, and Television (SARFT) • Using Satellite and Terrestrial Interactive Multiservice Infrastructure (STiMi)

  25. Components • Use different frequency bands for two transmission channels • S band for satellite Frequency: 2.635-2.660 GHz • UHF band for terrestrial repeaters Frequency: 470-862 MHz • Channel bandwidth can be modulated into either 8MHz or 2MHz

  26. Infrastructure • Support both terrestrial or satellite’s signal broadcasting

  27. General Application • Face to small-screen & handheld devices, e.g. mobile phone, PDA, MP4, digital camera • Provide mobile TV, comprehensive information & emergency broadcast services • Deployed in over 330 cities in China since 2008

  28. Applications in HK - UTV • Provided by China Mobile Hong Kong Company Limited (CMHKCL) in 2012 • Own a 8MHz bandwidth license  678MHz-686MHz (UHF band) • 7 hilltop transmitting stations  6 hired from TVB & 1 hired from ATV

  29. Applications in HK - UTV • Provide 8 Channels  2 for free • Transmit QVGA (320x240) video signal, lower than quality of VCD • HKTV bought CMHKCL by $104 million in 20/12/2013

  30. Strength • Stable broadcasting • Suitable for small screen devices (mobile phone) • High coverage  95% HK region

  31. Weakness • Low resolution • Extra receiver is need  extra cost • Provide fewer channels

  32. III) DTMB

  33. Component • What is DTMB?  Digital Television Terrestrial Multimedia Broadcasting • Signal frequency: 470-806 MHz • Bit-rate: from 4.813Mbit/s to 32.486 Mbit/s • Channel bandwidth can be modulated into 1.5MHz • Development: from only in-house to now outdoor with a small receiver

  34. Infrastructure

  35. General Usages Traditional: Internal New Trend: External Mobile devices Built-in receiver: e.g. Korean mobile phone External receiver:  HK mobile phone, which is a new technology • Broadcasting TV signal • Fixed site: home TV

  36. Applications • Application in HK give 2 examples (inner/outer) • Foresee: More and more people would apply the skill on mobile TV (Outer)  Why? -Much more convenience - Mobile TV becomes more popular in Hong Kong

  37. Strength 1. What are the reasons of using DTMB?  High resolution (max. 1080i)  Stable broadcasting (foreign) 2. Korea and Germany successfully broadcasted the World Cup by using DTMB (But, how about HK?)

  38. Weakness • A receiver is needed • Not suitable on mobile phone or tabs • Not stable broadcasting (in HK) 1. Immature skills 2. Signal is blocked by tunnel, tall buildings, etc.

  39. IV) DVB

  40. DVB – component • Digital Video Broadcasting (DVB) • is a suite of internationally accepted open standards for digital television • It suits for TV and Mobile TV transmission

  41. DVB-H • Digital Video Broadcasting • DVB-H Modulation Frequency OFDM(5,6,7,8 MHz) • mobile TV format • European Union’s preferred technology • mobile broadcasting on March 2008

  42. DVB in the world

  43. DVB-H application at present • DVB-H has been a commercial failure, and the service is no longer on-air. • Finland was the last country to switch-off its signals in March 2012.

  44. DVB application in Hong Kong • In Hong Kong, digital terrestrial broadcasting services started since 31 December 2007 • EG: TVB, ATV • Planed to use DVB • Followed Chinese standard DTMB • Now DVB is not prevalent in Hong Kong

  45. DVB application in Hong Kong • The OFCA(Office of the Communications Authority) suggested The HKTV to use DVB-H for broadcast their TV channel

  46. Strength and Weakness • Strength • Suitable for mobile device • High resolution • Weakness • External receiver needed • Additional cost need as receiver

  47. DVB-T2-Lite • DVB-T2 is a new standard based on DVB • The GSMA Mobile World Congress • is a combination of the world's largest exhibition for the mobile industry and a conference • 4K(3840×2160/4096×2160) available • is now testing 4k in Czech Republic

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